V-belt transmission apparatus

Abstract

A V-belt transmission apparatus made of a pair of endless metallic belts and a plurality of V-shaped metallic members disposed in series in a stacked condition on the belts. Each V-shaped metallic member has laterally open, channel shaped grooves on both sides with the metallic belt on each side being inserted in the groove on that side. Each V-shaped metallic member includes a main body having a projection portion and a stopper member prepared separately from and attached to the projection portion of the main body. The stopper member forms upper wall portions defining the channel shaped grooves together with the main body.

What is claimed is: 
     
       1. A V-belt transmission apparatus comprising endless metallic belt means and a plurality of V-shaped metallic members disposed in series in a stacked condition along on said endless metallic belt means, said apparatus being arrangeable around a driving pulley and a driven pulley so as to enable power transmission between the two pulleys; said metallic belt means comprising at least two metallic belts disposed laterally in parallel one with another, each V-shaped metallic member being provided with laterally open, channel-shaped grooves made on both sides thereof, said metallic belt on each side being inserted in the channel-shaped groove on the corresponding side; each V-shaped metallic member comprising a main body having a projection portion, and a stopper member prepared separately from and attached to the main body of the V-shaped metallic member forming upper wall portions defining the channel-shaped grooves on both sides and facing outer surfaces of the metallic belts on both sides, the main body of the V-shaped metallic member being open upwardly on both sides of said projection portion thereof which is closed with the stopper member defining the channel-shaped grooves therebelow on both sides. 
     
     
       2. A V-belt transmission apparatus as claimed in claim 1, wherein said projection portion of the main body of the V-shaped metallic member protrudes from an intermediate part of a lateral width of a base portion of the main body, and the stopper member is a wire member engaged with said projection portion. 
     
     
       3. A V-belt transmission apparatus as claimed in claim 1, wherein the stopper member is a molded member which is attached to the projection portion of the main body of the V-shaped metallic member by press-fit engagement therewith. 
     
     
       4. A V-belt transmission apparatus as claimed in claim 1, wherein the main body of the V-shaped metallic member is made of sintered alloy, and has a lower wall surface on each side of the projection portion thereof which is in contact with an inner facing surface of the corresponding metallic belt, said lower wall surface being a curved surface.